obsidian/🛡️ Debate/🗡️ Opponents/ImDemonWolf.md

Debate 1

Proposition

"bivalves are sentient because they have a brain."

Argument

1. "The definition of brain needs to apply to all species... Not being such, it is speciesist intentionally.
2. If the definition of a brain doesn't apply to sponges, then your definition of brain is speciesist on your own lights.

ImDemonWolf's Definition of a Brain

Definiendum	Definiens
B	something (x) is a brain
M	something (x) is a convoluted mass of nervous substance
S	something (x) is is encased within a skull
c	cerebral ganglia inside of a bivalve

P1) Something is a brain if, and only if, something is a convoluted mass of nervous substance and is encased within a skull.
(∀x(Bx↔Mx∧Sx))
P2) The cerebral ganglia inside of a bivalve is convoluted masses of nervous substance.
(Mc)
P3) The cerebral ganglia inside of a bivalve is not encased within a skull.
(¬Sc)
C) Therefore, the cerebral ganglia inside of a bivalve is not a brain.
(∴¬Bc)

Proof Tree

Analysis

1. If your definition of a brain is so broad that it captures structures like cerebral ganglia, I don't see how you're not committed to the proposition that my body contains multiple brains. Do you sign off on that?

Receipts

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